After nearly having to spend the night with no water on a day hike that took much longer than anticipated I bought this product. I just used the UV Filter on the Kalalau Trail in Kauai, Hawaii for the first time. I live here and this is a world famous 11 mile (each way) hike on the north coast of the island where streams and waterfalls abound. It was nice to take less water than I needed and be able to safely refill my CamelBak. Boiling is always the best option but this product is great because you don't have to stop and "set up camp" just to boil some water. 60 seconds and you have clean drinking water. Also you can use it on a day hike where your not bringing a stove.

It was also really nice that it came free with the All Clear Pre-Filter. It was nice to have when your filling from a stream or river.

Overall the product is easy to use and small to pack and it will be with me on every hike from now on. It is slightly heavy but it's worth its weight in gold if you come to need it.

I gave the All Clear a test run during a hot, muggy day hike, and I was really pleased with how it worked out. First, the bottle comes with a normal lid in addition to the purifying lid; the purifying lid has a nice little neoprene sleeve to keep it in. While my friend struggled to clean his filter and suck it through the filter straw in his water bottle, I just pushed a button and twirled my bottle around for a while. His water tasted like iodine; mine was delicious.

I haven't put it through the paces of how many treatments I can get on one battery charge, but I like how it charges via USB: you can charge it using any contraption you would normally use to charge your cell phone, and don't have to worry about running out of your stock of AAA's or anything.

Overall I'm impressed with the thoughtfulness of the design and the build quality, and I look forward to using the All Clear many times in the future.